Merge pull request #289 from GuillaumeGomez/fix-purge-check

Add lib.rs to ignore purge files

build.rs

@@ -6,7 +6,7 @@ fn main() {
 fn manage_docs() {
     extern crate lgpl_docs;
     const PATH: &'static str = "src";
-    const IGNORES: &'static [&'static str] = &[];
+    const IGNORES: &'static [&'static str] = &["lib.rs"];
     lgpl_docs::purge(PATH, IGNORES);
     if cfg!(feature = "embed-lgpl-docs") {
         lgpl_docs::embed(lgpl_docs::Library::Cairo, PATH, IGNORES);